Set refresh rate stats correctly on SF initialization.

Otherwise when peak refresh rate is disabled we incorrectly report that
the device is running at 90hz.

Bug: 129015309
Test: dumpsys
Change-Id: I426720949332ab702b0712a4fc14ed588be54ad9
diff --git a/services/surfaceflinger/Scheduler/RefreshRateStats.h b/services/surfaceflinger/Scheduler/RefreshRateStats.h
index 2491081..d4ae330 100644
--- a/services/surfaceflinger/Scheduler/RefreshRateStats.h
+++ b/services/surfaceflinger/Scheduler/RefreshRateStats.h
@@ -147,7 +147,7 @@
     // Aggregate refresh rate statistics for telemetry.
     std::shared_ptr<TimeStats> mTimeStats;
 
-    int64_t mCurrentConfigMode = 0;
+    int64_t mCurrentConfigMode = SCREEN_OFF_CONFIG_ID;
     int32_t mCurrentPowerMode = HWC_POWER_MODE_OFF;
 
     std::unordered_map<int /* power mode */, int64_t /* duration in ms */> mConfigModesTotalTime;